AWS - Elastic Load Balancing
If the health check path is set to "/health" but the application returns HTTP 500 errors for this path, what will the load balancer do?
If the health check path is set to "/health" but the application returns HTTP 500 errors for this path, what will the load balancer do?
medium📝 Debug Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Understand health check response codes
Health checks expect successful HTTP status codes (2xx or 3xx) to mark targets healthy.Step 2: Effect of HTTP 500 errors
HTTP 500 indicates server error; repeated failures cause the load balancer to mark the target unhealthy after reaching the UnhealthyThresholdCount.Final Answer:
Mark the target as unhealthy after threshold failures -> Option AQuick Check:
HTTP 500 causes health check failures [OK]
Quick Trick: HTTP 500 causes health check failures [OK]
Common Mistakes:
- Assuming load balancer ignores server errors
- Thinking health check path changes automatically
- Believing load balancer restarts targets
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